/*
 * JSplashLabel.java
 *
 * Copyright (c) 2004-2009 Gregory Kotsaftis
 * gregkotsaftis@yahoo.com
 * http://zeus-jscl.sourceforge.net/
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */
package com.googlecode.yonggemovie.widgets.splash;

import java.awt.Color;
import java.awt.Font;
import java.awt.FontMetrics;
import java.awt.Graphics;
import java.awt.MediaTracker;
import java.net.URL;
import javax.swing.ImageIcon;
import javax.swing.JLabel;

/**
 * Extends JLabel to provide support for custom text drawing inside image used
 * for JSplash component.
 * <p>
 * 
 * @author Gregory Kotsaftis
 * @since 1.06
 */
public final class JSplashLabel extends JLabel {

	/**
	 * Used to draw the text string.
	 */
	private String m_text = null;

	/**
	 * Font to use when drawing the text.
	 */
	private Font m_font = null;

	/**
	 * Colour to use when drawing the text.
	 */
	private Color m_color = null;

	/**
	 * Constructor.
	 * <p>
	 * 
	 * @param url
	 *            The location of the image (<b>it cannot be null</b>).
	 * @param s
	 *            The string to draw (can be null).
	 * @param f
	 *            The font to use (can be null).
	 * @param c
	 *            The color to use (can be null).
	 */
	public JSplashLabel(URL url, String s, Font f, Color c) {
		super();
		ImageIcon icon = new ImageIcon(url);
		if (icon.getImageLoadStatus() != MediaTracker.COMPLETE) {
			System.err.println("Cannot load splash screen: " + url);
			setText("Cannot load splash screen: " + url);
		} else {
			setIcon(icon);
			m_text = s;
			m_font = f;
			m_color = c;

			if (m_font != null) {
				setFont(m_font);
			}
		}
	}

	/**
	 * Overrides paint in order to draw the version number on the splash screen.
	 * <p>
	 * 
	 * @param g
	 *            The graphics context to use.
	 */
	public void paint(Graphics g) {
		super.paint(g);
		if (m_text != null) {
			if (m_color != null) {
				g.setColor(m_color);
			}

			FontMetrics fm = g.getFontMetrics();
			int width = fm.stringWidth(m_text) + 20;
			int height = fm.getHeight();

			g.drawString(m_text, getWidth() - width, getHeight() - height);
		}
	}

}
